Open AccessEnhanced formation of advanced oxidation protein products in IBD
Author(s) -
KrzystekKorpacka Malgorzata,
Neubauer Katarzyna,
Berdowska Izabela,
Boehm Dorota,
Zielinski Bogdan,
Petryszyn Pawel,
Terlecki Grzegorz,
Paradowski Leszek,
Gamian Andrzej
Publication year - 2008
Publication title -
inflammatory bowel diseases
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.932
H-Index - 146
eISSN - 1536-4844
pISSN - 1078-0998
DOI - 10.1002/ibd.20383
Subject(s) - erythrocyte sedimentation rate , oxidative stress , ulcerative colitis , c reactive protein , medicine , albumin , gastroenterology , catalase , inflammatory bowel disease , superoxide dismutase , transferrin , crohn's disease , inflammation , acute phase protein , immunology , disease
Background: Advanced oxidation protein products (AOPPs) are new protein markers of oxidative stress with pro‐inflammatory properties, accumulated in many pathological conditions. The issue of their enhanced formation in IBD has not been addressed yet. Methods: The concentration of relative AOPPs (rAOPP; concentration of AOPPs divided by albumin level) were measured in 68 subjects with ulcerative colitis (UC), 50 subjects with Crohn's disease (CD) and 45 healthy volunteers, and related to disease phenotype, clinical and biochemical activity, and therapeutic strategy. Diagnostic utility of rAOPP was evaluated by ROC analysis. Results: In comparison with controls (1.367 μmol/g), rAOPP were increased in inactive (1.778 μmol/g, P = 0.053) and active (1.895 μmol/g, P = 0.013) UC and in active (1.847 μmol/g, P = 0.003) CD. In CD, but not UC, rAOPP correlated with disease activity ( r = 0.42, P = 0.013). Significant correlations with the inflammatory/malnutrition indices‐erythrocyte sedimentation rate (ESR) ( r = 0.53), leukocytes ( r = 0.33), platelets ( r = 0.38), IL‐6 ( r = 0.36), and transferrin ( r = −0.35) were demonstrated in CD. In UC, rAOPP correlated only with ESR ( r = 0.35) and IL‐6 ( r = 0.30). Instead, associations with antioxidant dismutase ( r = 0.29) and catalase ( r = 0.22) were observed. The diagnostic power of rAOPP in discriminating diseased from non‐diseased subjects was less than that of C‐reactive protein (CRP). Simultaneous determination of rAOPP and CRP did not significantly improve the power of single CRP determination. Conclusions: IBD was associated with enhanced formation of AOPP, which differed between C and UC with respect to the relationship between rAOPP and disease activity, inflammatory and antioxidant response. These differences may reflect divergent ways that oxidative stress develops in CD and UC. The diagnostic power of rAOPP was insufficient for its clinical application. (Inflamm Bowel Dis 2008)